适当形式填空:While ___(climb) up the hill,the old man often sat down an_英语解答

适当形式填空:While ___(climb) up the hill,the old man often sat down and had a rest.

人气：141 ℃　时间：2020-03-23 14:10:51

解答

climbing=While he was climbing up the hill,
在爬山的时候,那位老人经常坐下来休息一下.